I know how you feel.
I work in a factory and between trying to lift boxes that range from 20 lbs-100 lbs, having to bend over the side of this huge square cardboard box that would easily hold 2 regular sized baby cribs to shovel little plastic beads so it will be pumped into the machine and having to pack little tiny fan propellers into these big boxes....i have such a hard time. Lol. So i already feel incapable, then i have everyone and their brother that works there asking me when i am going to go work in the back where the 70 yr old ladies & ppl on light duty work....i swear i will scream the next time i am asked about it. Ugh.
I feel your pain.
But i get the total opposite at home....my fiance says i should be able to do all of the housework & not be exhausted and out of breath when i am done. Lol